Do not quit! You will be sorry as I am at the ripe age of...ahem, I refuse to say because I refuse to ever feel old. I did not have anyone to care enough and say, Hey, stupid, what are you doing?
Anyway, this seems to be the age when piano players want to quit, like I did stupidly and I didn't have a forum like this for advice. Consider yourself blessed that you have all of us who care and to save you from one of the biggest mistakes you will make. Why is 6 a.m. ridiculous? I love the morning because you have total solitude at that time. Get a new teacher, go to bed earlier. And if that doesn't work, then ask us again, but do not quit! Other than that, I'm no expert on anything other than my own life experiences. Your heart never lies; listen to your heart.